摘要
根据生态农业土地评价指标体系设置的原则,以山东省为例,研究建立了可供不同层次生态农业区选用的参考指标库。并采用主成分分析法对选用的4个指标组19个指标进行筛选和优化,最后确定11个指标组成生态农业县土地评价指标体系。
According to the principles in setting up index system of eco-agricultural land evaluation,a reference index corpus which can be selected by different eco-agricultural regions is established.The principal component analysis(PCA) is used to select and optimize indexes from nineteen ones in four index groups.Finally,eleven indexes are defined as the index system of land evaluation for the eco-agricultural county.
出处
《中国生态农业学报》
CAS
CSCD
2005年第3期25-28,共4页
Chinese Journal of Eco-Agriculture
关键词
生态农业
土地评价
指标体系
山东
主成分分析
Eco-agriculture,Land evaluation,Index system,Principal component analysis(PCA)
